Talisman / Harry are right the idea is to get a bat to suit the players style.... Sometimes they kno,w sometimes they ask,
If they ask about a bat shape you explain, if they ask about the handle you explain, if they ask about a particular cleft you explain, if they ask about pressing you explain.
The trick isn't a compromise it is to give them enough information as part of the process so they understand what the bat will do, why it will do it and how it is the best bat for them.
That is why you go custom made in the UK